Bolt types for my crossbow:
solid + sharp (For basic attacks, mostly for piercing stuff)
explosive + sticky (For being annoying and exploding things)
oil + foam (For messing with anything that is moving towards us, the foam is in order to get bast energy shields, I have no clue if that is a good idea)
explosive + magnetic (For exploding on metal things)

A life well lived only happens once.Seems deep until you think about it.

The oil doesn't set itself on fire, so I'd take an incendiary tip with that, and I don't think foam tips get through energy shields.
And sticky + explosive works on metal as well, so you could use that last slot for something else